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2. The agents in a two-commodity exchange economy have utility functions: ul (211, 2'21) = In(211) + 2 In(221) U2 (212, X22) = 21n(212) + In(x22) Endowments are w1 = (9,3) and w2 = (12, 6). a) Characterize the Pareto set and the contract curve. b) Obtain the excess demand function for each good and verify that Walras' Law is true. c) Find the equilibrium price ratio. d) What is the equilibrium allocation